Extension-chan deli er



P. OVERHOLT. EXTENSIQN UHANDBLIBR.

Patented Aug. 30, 1892.

Il lll (No Model.)

Unirse STATES Armar FRANK OVERHOLT, OF HARLAN, IOIVA.

EXTENSION-CHANDELIER.

SPECIFICATION forming part of Letters Patent No. 481,814, dated August30, 1892.

Application tiled May 31, 1892. Serial No. 434.986. (No model.)

To all whom it may concern.-

Beit known that I, FRANK OvERHoLT, a citizen of the United States,residing at Harlan, in the county ot' Shelby and State of Iowa, haveinvented certain new and useful Improvements in Extension-Chandeliers,as set forth in the accompanying drawings, forming part of thisspecification, in which- Figure l represents a vertical sectional Viewshowing the telescopic tubes of an extensionchandelier and interiorspirally-twisted conducting-wires and showing the parts extended. Fig. 2is a similar View showing the tubes telescoped one within the other andthe conducting-wires contracted. Fig. 3 is a modiication to be referredto.

My invention relates to extension-chandeliers especially adapted forelectric-lighting purposes; and my invention consists ot theconstruction and combination of devices,

which I shall hereinafter fully describe and claim.

To enable others skilled in the art to which my invention appertains tomake and use the same, I will now describe its construction and indicatethe manner in which the saine is carried out.

In the drawings, A, A', and A2 represent a series of tubes havingdifferent diameters, whereby they may slide one within the other. In thepresent case I have shown three tubes, and in which the upper one A isthe largest and has its lower end formed with an inwardly-turned flangeor screw-cap a, and its upper end provided with a plate or other meansfor suspending the tubes from a iixed support. The middle tube A isfitted within the upper tube and has its upper end formed with anoutwardly-turned flange or screw-cap b closely itting the inner walls ofthe upper tube, While at the lower end of this middle tube is aninwardly-turned ilange or screw-cap c. The lower tube A2is titted withinthe middle tube A and has its upper end formed with an ontwardly-turnedflange or screw-cap d and its lower end formed or attached to anydesired form of lamp socket or support B, which furnishes a support forone or more lamps or burners. 1 (Not shown.)

In the lower or upper portions of the tubes A and A spring-plates e aresecured at one end and have their upper ends free and adapted to bearinwardly against the outer walls ot the middle and lower tubes,respectively, whereby the frictional contact of these spring-plates willassist in holding the tubes in any adjusted position and to retain themin a closed or telescoped condition when desired. These plates .alsoassist in steadying the tubes when the latter are extended and preventtheir being extended too far. To assist this holding of the tubes and toprovide a simple means for conducting the current ofY electricity fromits source of supply to the lamp or burner, I arrange within the centralpassage ot the tube the spirally twisted or coiled insulated wires G andII, one ot' which connects with the positive and the other with thenegative poles of the battery in any well-known manner. These wires Gand I-I are preferably of spring metal, and being spirally coiled assistthe springplates in holding the tubes closed, or in their adjustedpositions, their coils being distended when the tubes are pulled out, asshown in Fig. 1, and contracted when the tubes are pushed into eachother or telescoped, as shown in Fig. 2. The wires are properlyinsulated from each other and the tubes, and they not only serve tocarry the current, but also employ the expansive and contractive forceof the coils to assist in suspending the tubes when the latter areextended, and also to maintain them closed when the tubes are pushedtogether.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. In an extension-chandelier, the telescopic tubes, the lower one ofwhich is provided with means for supporting a lamp or burner, said tubeshaving limiting-stops at their ends and one of said tubes carrying alamp-socket, in combination with spirallycoiled wires within the tubesto be connected with the ope posite poles of an electric circuit and toassist in supporting the Weight of the tubes and maintain them in theiradjusted positions, substantially as herein described.

2. In an extension-chandelier,the telescopic tubes having inwardly andoutwardly turned iianges at their ends and a lamp-socket carried by thelower tube, in combination with conducting-wires within the tubes and tobe connected with a source of electric supply,

said Wires being spirally coiled, whereby they are distended when thetubes are extended and contracted when the tubes are telesooped,substantially as herein described.

3. In an extension-chandelier having telescopic tubes with inwardly andoutwardly turned end flanges, the spring-plates secured to the innerWalls of the tubes, with their free ends bearing against the outer wallsof adjacent tubes, and spirally-coiled Wires eKtend- 1o ing through saidtubes to assist the springplates in maintaining the tubes in their adjusted positions, substantially as herein described.

FRANK OVERHOLT. Witnesses:

EDWARD R. FISHER, HERMAN NOBLE.

